JPH0413635Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is useful, for example, when adding glass fibers, carbon fibers, metal fibers, etc. to plastic materials in order to improve their mechanical properties and electrical properties. Specifically, the device is used to transfer the fibrous raw material from the hopper using a fibrous raw material supply hopper with a funnel-shaped falling supply port and a reaction trough, and to remove surplus fibrous raw material during the transfer. The present invention relates to a quantitative supply device for a fibrous raw material, which is equipped with a mechanism for dropping a fibrous raw material from a trough and delivering a fixed amount of the fibrous raw material from the transfer end of the trough.

[Conventional technology]

In a conventional quantitative supply device for a fibrous raw material of this kind, a funnel-shaped drop supply opening in the hopper is constructed in a continuous manner with the hopper main body.

[Problem that the invention attempts to solve]

However, when using this conventional device, the weight of the fibrous raw material accommodated in the hopper causes a bridging phenomenon of the fibrous raw material at the small diameter portion of the funnel-shaped falling supply opening, causing a blockage in the falling supply of the fibrous raw material. As a result, the supply of the fibrous raw material from the hopper to the trough is interrupted, and even if the trough is reliably transferring the fibrous raw material, there is a disadvantage that the supply of the fibrous raw material is likely to vary. .

In order to eliminate such drawbacks, for example, it is possible to arrange a buff-full plate inside the hopper, such as those used in powder supply devices, but the vibration of the buff-full plate inside the hopper is However, it did not work very effectively in drawing out the fibrous raw material, and could not sufficiently fulfill its role as a means for eliminating clogging of the fibrous raw material.

In other words, since the fibrous raw materials are intertwined with each other, even if vibration is applied by the buffer plate inside the hopper, the vibration is effective in loosening the contents inside the hopper, but the vibration is effective in loosening the contents inside the hopper. There is almost no feeding function for the fibrous raw material fed into the discharge tube, and therefore, the fibrous raw material in the discharge tube is pulled out against the resistance of the fixed wall on the inner circumference of the discharge tube. This was not suitable as a means for clearing the blockage.

An object of the present invention is to provide a fixed-quantity feeding device with a structure that prevents clogging of fibrous raw materials during the feeding process from the hopper to the trough, with a simple structure and with little power loss.

[Means to solve the problem]

The technical means of the present invention for achieving the above object includes a fibrous raw material supply hopper that stores the fibrous raw material, a vibrating trough, which transports the fibrous raw material from the hopper, and surplus fibers during the transfer. In a quantitative supply device for a fibrous raw material, comprising a mechanism for dropping the fibrous raw material from above a trough and delivering the fibrous raw material in a fixed amount from the transfer end of the trough,
It is equipped with the configurations described in [A] to [C] below.

[A] The hopper is composed of a hopper main body having a storage section for fibrous raw material, and a funnel-shaped drop supply port located below the hopper main body.

[B] The falling supply port is separated from the hopper main body, and the separated falling supply port is supported by the quantitative delivery mechanism so as to vibrate together with the trough.

[C] The falling supply port section is provided with a discharge tube section at the end of the supply to the trough, and this discharge tube section is
It is formed into a cylindrical shape with little change in the cross-sectional area of the flow path from the inlet side to the outlet side.

[Effect]

a. Instead of supplying the fibrous raw material in the hopper in a falling manner by the vibration of a buttful plate provided inside the hopper, the funnel-shaped falling supply opening itself is vibrated, and the falling supply opening and discharge tube section is Since it is formed into a cylindrical shape with a small change in the cross-sectional area of the flow path from the inlet side to the outlet side, the fibrous raw material can be easily discharged without clogging even in the discharge tube portion which has a large contact area with the fibrous raw material.

In other words, if the discharge tube section is composed of a fixed wall, it will provide a large sliding resistance to the fibrous raw material in the moving direction, but as the discharge tube section itself vibrates, the fixed wall Not only does the wall-equivalent portion disappear, but it also functions as a means for feeding the fibrous raw material.

(b) Furthermore, since the funnel-shaped falling supply port is vibrated by the trough vibrating device of the quantitative delivery mechanism, there is no need for a special vibration device for vibrating the falling supply port.

c. Moreover, since the falling supply opening section is separated from the hopper body and only the separated falling supply opening section is vibrated by the trough vibration device, rather than the entire hopper, compared to the case where the entire hopper is vibrated, The burden placed on the trough vibrating device due to the vibration of the drop supply opening can be reduced, and the increase in size of the trough vibrating device can be suppressed as much as possible.

[Effect of idea]

B. Due to the effect of a. above, clogging due to the bleed phenomenon of the fibrous raw material in the discharge tube part of the funnel-shaped falling supply port is reliably prevented, and the fibrous raw material is smoothly supplied falling from the hopper to the trough. It has the advantage of being reliable.

(b) Due to the effects of bc mentioned above, it has become possible to provide a device for quantitatively supplying fibrous raw materials that is small in size and can be economically implemented with low power consumption for driving. Ivy.

〔Example〕

As shown in FIGS. 1 to 3, a hopper 1 for supplying fibrous raw materials (glass fibers, carbon fibers, metal fibers, etc.) is provided, and a falling supply port 1A is configured in the shape of a funnel. A mechanism 3 using a vibrating conveyor for delivering a fixed amount of the fibrous raw material from the hopper 1 to the discharge pipe 2 is provided on the lower side to constitute a fibrous raw material quantitative supply device.

The falling supply port 1A is separated from the cylindrical hopper main body 1B supported by the fixed columns 1a, and a flow from the inlet side to the outlet side is connected to the supply end of the falling supply port 1A. A discharge tube portion 7 formed in a cylindrical shape with a wide base is arranged in series so that the cross-sectional area of the road does not change significantly. Then, via the pillar 5 located inside the discharge cylinder section 7, a full plate receives a part of the weight of the accommodated fibrous raw material to stabilize the supply of the raw material to the quantitative delivery mechanism 3. 1b is installed inside.

The quantitative delivery mechanism 3 climbs and transfers the fibrous raw material from the hopper 1 while disentangling it by means of a vibrating trough 3A configured in a spiral around the vertical axis, and removes excess during the transfer. The fibrous raw material is dropped from above the trough 3A and
The fibrous raw material is sent out in a fixed amount from the transfer end to the discharge tube 2, and specifically, the fibrous raw material from the hopper 1 can be received at its center and is The spiral trough 3A is applied to the peripheral wall of the container 3C to which vibration is applied.
During the transfer, excess fibrous raw material is transferred to container 3C.
The inner side is attached at a free end so that it can be dropped toward the center. The trough 3A is configured to become gradually narrower toward the lower side of the transport side.

Then, the falling supply is provided in a state where an opening 4 for discharging and moving the fibrous raw material radially outward is formed on the peripheral wall of the container 3C between the lower end of the falling supply port 1A of the hopper 1 and the bottom wall of the container 3C. Mouth part 1A
At the same time, the pillar 5 erected at the center of the bottom wall of the container 3C supports the baffle plate 1b, so that both 1A and 1b are configured to vibrate together with the trough 3A, and the falling supply The fibrous raw material, which is in an up-and-down position due to the frictional force between it and the inner circumferential surface of the mouth part 1A, stands up on the bottom surface of the container 3C in that up-down position, and the discharge port 4 is blocked by this upright fibrous raw material. In order to prevent this, the drop supply port 1
The lower end inner circumferential surface portion 1c of A and the connecting surface 6 between the outer circumferential surface of the column 5 and the bottom surface of the container 3C are each formed into a curved surface that deviates outward in the radial direction toward the bottom.

[Brief explanation of the drawing]

The drawings show an embodiment, and FIG. 1 is a longitudinal sectional view, and FIG.
The figure is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 3 is a schematic vertical cross-sectional view showing a fixed quantity supply state. 1A...Drop supply port, 1...Hopper, 3A
...Vibration trough, 3...Quantitative delivery mechanism, 1B...
Hopper main body, 1b...bump full plate, 3C...container, 7...discharge tube section.

Claims (1)

[Claims for Utility Model Registration] 1. A fibrous raw material supply hopper 1 for storing fibrous raw materials and a vibration trough 3A are used to transfer the fibrous raw materials from the hopper 1, and during the transfer, excess fibrous raw materials are removed. A mechanism 3 for dropping a fibrous raw material from above the trough 3A and delivering a fixed amount of the fibrous raw material from the transfer end of the trough 3A, and having the configuration described in [A] to [C] below. Feeding device. [B] The hopper 1 is composed of a hopper main body 1B having a storage portion for fibrous raw material, and a funnel-shaped drop supply port 1A located below the hopper main body 1B. [B] The falling supply port 1A is separated from the hopper main body 1B, and the separated falling supply port 1A is connected to the trough 3.
It is supported by the quantitative delivery mechanism 3 so as to vibrate together with A. [C] The falling supply port 1A is a trough 3A.
A discharge tube section 7 is provided at the end of the supply to the tube, and the discharge tube section 7 is formed into a cylindrical shape with a small change in the cross-sectional area of the flow path from the inlet side to the outlet side. 2. The fibrous raw material quantitative supply device according to claim 1, wherein the separation supply port 1A is equipped with a buffer plate 1b that stabilizes the falling supply amount of the accommodated fibrous raw material. 3 The trough 3A receives the fibrous raw material from the hopper 1 at its center and transfers the received fibrous raw material obliquely upward along the inner peripheral surface of the peripheral wall to the peripheral wall of the container 3C, and The quantitative supply device for fibrous raw material according to claim 1 or 2, which is spirally attached so that surplus fibrous raw material falls toward the center of the container 3C along the way.